Abstract
The
fall
armyworm
(
Spodoptera
frugiperda
)
is
one
of
the
major
pest
insects
damaging
diverse
crops
including
cotton,
corn,
rice,
and
sorghum.
Fall
armyworms
have
been
identified
as
two
morphologically
indistinguishable
strains,
corn
strain,
rice
named
after
their
preferred
host‐plants.
Although
initially
recognized
host‐plant
there
has
an
ongoing
debate
regarding
whether
strains
should
be
considered
such.
In
this
article,
we
present
arguments
based
on
recent
population
genomics
studies
supporting
that
these
to
strains.
Furthermore,
adaptation
appears
a
driving
evolutionary
force
responsible
for
incipient
speciation
in
armyworm.
Abstract
Background
The
black
cutworm,
Agrotis
ipsilon
,
is
a
serious
global
underground
pest.
Its
distinct
phenotypic
traits,
especially
its
polyphagy
and
ability
to
migrate
long
distances,
contribute
widening
distribution
increasing
difficulty
of
control.
However,
knowledge
about
these
traits
still
limited.
Results
We
generated
high-quality
chromosome-level
assembly
A.
using
PacBio
Hi-C
technology
with
contig
N50
length
~
6.7
Mb.
Comparative
genomic
transcriptomic
analyses
showed
that
detoxification-associated
gene
families
were
highly
expanded
induced
after
insects
fed
on
specific
host
plants.
Knockout
genes
encoded
two
ABC
transporters
CRISPR/Cas9
significantly
reduced
larval
growth
rate,
consistent
their
contribution
adaptation.
A
comparative
analysis
between
tethered-flight
moths
migrating
expression
changes
in
the
circadian
rhythm
AiCry2
involved
sensing
photoperiod
variations
may
receipt
magnetic
fields
accompanied
by
MagR
regulate
juvenile
hormone
pathway
energy
metabolism,
all
migration
processes.
Conclusions
This
study
provides
valuable
resources
for
elucidating
mechanisms
moth
developing
innovative
control
strategies.
Insects,
Год журнала:
2023,
Номер
14(2), С. 104 - 104
Опубликована: Янв. 18, 2023
During
the
past
decades,
research
on
insect
cell
culture
has
grown
tremendously.
Thousands
of
lines
have
been
established
from
different
species
orders,
originating
several
tissue
sources.
These
often
employed
in
science
research.
In
particular,
they
played
important
roles
pest
management,
where
used
as
tools
to
evaluate
activity
and
explore
toxic
mechanisms
insecticide
candidate
compounds.
This
review
intends
first
briefly
summarize
progression
line
establishment.
Then,
recent
studies
based
coupled
with
advanced
technologies
are
introduced.
investigations
revealed
that
can
be
exploited
novel
models
unique
advantages
such
increased
efficiency
reduced
cost
compared
traditional
Most
notably,
line-based
provide
a
global
in-depth
perspective
study
toxicology
insecticides.
However,
challenges
limitations
still
exist,
especially
connection
between
vitro
vivo
effectiveness.
Despite
all
this,
advances
suggested
promote
progress
sensible
application
insecticides,
which
benefits
management.
Journal of Plant Pathology,
Год журнала:
2024,
Номер
106(2), С. 301 - 325
Опубликована: Фев. 8, 2024
Abstract
The
adoption
of
agriculture
in
several
parts
the
world
during
early
Neolithic
period
led
to
a
fundamental
change
human
migration.
By
introducing
newly
domesticated
crops
into
new
environments,
pathogens
and
parasites
were
also
inadvertently
transferred
from
their
regions
origin
underwent
considerable
population
growth.
In
settled
regions,
some
pests
indigenous
plants
adapted
by
host
switching.
This
review
is
limited
three
basic
migration
events
mainly
agricultural
temperate
zone:
(1)
first
farmers
SE
Asia
Europe,
(2)
European
expansion
16th
century
onward,
(3)
modern
globalization
since
20th
century.
Molecular
analyses
offer
opportunity
study
evolutionary
history
pest
populations,
dynamics
spread
around
world.
Cereals’
rusts
powdery
mildew,
storage
insects
with
wheat
species,
barley,
pulses
Levant
across
Eurasia.
Columbian
exchange
Americas
brought
entirely
Europe
while
old
subsequently
all
other
colonized
Europeans.
Modern
further
facilitated
worldwide,
as
previously
inconceivable
amounts
products,
business
travelers,
maybe
tourists
have
elevated
global
accessibility.
illustrated
case
studies
based
on
fungi
insects.
near
future,
will
countries
where
they
can
exist
according
agro-climatic
requirements.
Abstract
The
fall
armyworm
(
Spodoptera
frugiperda
)
is
one
of
the
major
pest
insects
damaging
diverse
crops
including
cotton,
corn,
rice,
and
sorghum.
Fall
armyworms
have
been
identified
as
two
morphologically
indistinguishable
strains,
corn
strain,
rice
named
after
their
preferred
host‐plants.
Although
initially
recognized
host‐plant
there
has
an
ongoing
debate
regarding
whether
strains
should
be
considered
such.
In
this
article,
we
present
arguments
based
on
recent
population
genomics
studies
supporting
that
these
to
strains.
Furthermore,
adaptation
appears
a
driving
evolutionary
force
responsible
for
incipient
speciation
in
armyworm.
